Run executable by current user with elevated privileges

Hello,
I am looking for a way to run a setup.exe installation with elevated privileges or something. I have made an unattended installation with VB script wich needs to be run by the current loged on user. The setup wil install user based components such as a MS Office plugin. The problem is that the loged on user has not sufficient privileges to install certain parts of the file system and registry. So I am looking for a way to run the setup.exe with elevated privileges or something that will do the trick. When I use a local admin account to run the installation, the user based components are not placed for the current loged on user. But when I add the current user to the administrator group, the installation run correctly.
 
I do not know if something like this is posible. I hope someone can tell me more or have a solution.
 
Greetings Ricardo

See http://www.planetcobalt.net/sdb/submission.shtml

Thank you for the advise. I have tried to monitor with filemon and regmon but did not find any usefull things. It's a pitty I can't see what the setup installer is doing. There is no loging option either. This one is driving me grazy. It would be so much easier to raise the "event" to elevated privileges or something.
 
thnx anyway